Polar bears are synonymous with the whiteness of their fur. However, their fur is not actually white. It's transparent and covers black skin. Why, then, do they not look like black bears? The polar ...

In the Arctic, polar bears are equally at home swimming in the frigid waters or galloping across fields of ice and snow. When they emerge from the water, their fur temperature drops to nearly that of ...

Scientists have discovered the anti-icing secret of polar bear fur -- something that allows one of the planet's most iconic animals to survive and thrive in one of its most punishing climates. That ...